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Electrophilic Substitution Reaction

Among the fol...

Question

Among the following compounds, the decreasing order of reactivity, towards electrophilic substitution is

A

I I I > I > I I > I V

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B

I V > I > I I > I I I

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C

I > I I > I I I > I V

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D

I I > I > I I I > I V

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Solution

The correct option is A $I I I > I > I I > I V$
Reactivity towards electrophilic substitution decreases as the electron density in the benzene ring decreases. Thus, option (a) is correct, i.e $I I I > I > I I > I V$ .

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